fix corner case in hoist_vars (#4840)

fixes #4839
2021-04-03 03:07:18 +01:00
parent 10fbf8e295
commit 0df028187d
2 changed files with 29 additions and 2 deletions
--- a/test/compress/hoist_vars.js
+++ b/test/compress/hoist_vars.js
@@ -140,7 +140,6 @@ issue_4487: {
        functions: true,
        hoist_vars: true,
        keep_fnames: true,
-        passes: 2,
        reduce_vars: true,
        toplevel: true,
        unused: true,
@@ -240,3 +239,29 @@ issue_4736: {
    }
    expect_stdout: "1073741824"
 }
+
+issue_4839: {
+    options = {
+        evaluate: true,
+        hoist_vars: true,
+        keep_fargs: false,
+        reduce_vars: true,
+        toplevel: true,
+        unused: true,
+    }
+    input: {
+        var o = function(a, b) {
+            return b && b;
+        }("foo");
+        for (var k in o)
+            throw "FAIL";
+        console.log("PASS");
+    }
+    expect: {
+        var k, o = void 0;
+        for (k in o)
+            throw "FAIL";
+        console.log("PASS");
+    }
+    expect_stdout: "PASS"
+}